package tech.lixinlei.spring.util.strings;

public class NullConverDemo {

    public static void main(String[] args) {

        System.out.println("a".equals(null));

        Object o = null;
        String s = (String) o;
        System.out.println(s);

        String s2 = String.valueOf(null);
        System.out.println();
    }

}
